JL
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Leung, Gastroenterologist in Boston, MA?
Dr. John Leung, MD is a Gastroenterologist, who primarily practices in Boston, MA with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Leung graduated from University of Michigan Medical School. Dr. Leung is fluent in English and Cantonese, and is currently seeing new patients. Dr. Leung’s practice accepts Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Leung’s office at (617) 804-6767.
What are Areas of Expertise for Dr. Leung?
Dr. John Leung, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Leung empowers patients to confidently navigate their health journey, specializing in Allergy, Asthma, Celiac Disease, Food Allergy, Immunology, or comprehensive wellness support. Serving the Boston/MA community, Dr. Leung is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Leung go to medical school and complete their residency?
Medical School: University of Mi Med Sch | University of Michigan Medical School
Is Dr. Leung board certified in Gastroenterologist?
Yes, Dr. John Leung, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Leung speak?
Dr. Leung and their clinical team can communicate with patients in the following languages:
Cantonese
English
What conditions does Dr. Leung treat?
As a Gastroenterologist, Dr. Leung diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Leung. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Allergic Rhinitis
- Allergic Contact Dermatitis
- Allergy
- Rashes
- Nasal allergy
- Chronic allergy symptoms
- Allergic reactions
- Allergic skin rash
- Contact allergy
- Skin irritation from allergens
ICD-10 Codes:
- J3089: Other allergic rhinitis
- L239: Allergic contact dermatitis, unspecified cause
Also known as:
- Eosinophilic Esophagitis
- EoE
- Allergic Esophagitis
- Eosinophilic Inflammation of Esophagus
ICD-10 Codes:
- K200: Eosinophilic esophagitis
Also known as:
- Widespread Abdominal Pain
- Upper Middle Abdominal Pain
- Abdominal Pain
- General stomach pain
- Overall belly pain
- Diffuse abdominal pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
- Stomach Ache
- Belly Pain
- Stomach Pain
ICD-10 Codes:
- R1084: Generalized abdominal pain
- R1013: Epigastric pain
- R109: Unspecified abdominal pain
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
Also known as:
- Acid Reflux
- GERD with Esophagitis
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Eosinophilic Esophagitis
- Gastroesophageal Reflux
- Heartburn
- Indigestion
- Reflux Esophagitis
- Acid Reflux Esophagus Inflammation
- Heartburn with Esophagus Damage
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
- K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding
Also known as:
- Rectal Bleeding
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
Also known as:
- Chronic Hives
- Hives
- Hives of unknown cause
- Spontaneous urticaria
- Persistent welts
ICD-10 Codes:
- L501: Idiopathic urticaria
Also known as:
- Diarrhea
- Functional Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
- Chronic Diarrhea
- Persistent Diarrhea
- Diarrhea without clear cause
ICD-10 Codes:
- R197: Diarrhea, unspecified
- K591: Functional diarrhea
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Malabsorption Due to Intolerance
- Malabsorption Syndromes
- Food Intolerance Malabsorption
- Digestive Intolerance
- Nutrient Malabsorption
ICD-10 Codes:
- K9049: Malabsorption due to intolerance, not elsewhere classified
Also known as:
- Pink Eye
- Conjunctivitis
- Red Eye
- Allergic Pink Eye
- Allergic Conjunctivitis
ICD-10 Codes:
- H1045: Other chronic allergic conjunctivitis
Also known as:
- Irritable Bowel Syndrome with Diarrhea
- Irritable Bowel Syndrome
- Irritable Bowel Syndrome (IBS)
- IBS-D
- Diarrhea-Predominant IBS
- Spastic Colon with Diarrhea
ICD-10 Codes:
- K580: Irritable bowel syndrome with diarrhea
Also known as:
- Mast Cell Activation
- Mast Cell Disorder
- Systemic Mast Cell Activation
- MCAS
ICD-10 Codes:
- D8940: Mast cell activation, unspecified
Also known as:
- Atopic Dermatitis
- Eczema
- Atopic dermatitis
- Itchy skin rash
- Allergic skin condition
ICD-10 Codes:
- L209: Atopic dermatitis, unspecified
Which procedures does Dr. Leung perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. John Leung may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Leung's office.
Does Dr. Leung accept my insurance?
Dr. Leung accepts most major insurance plans. Important: Please call our office at (617) 804-6767 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Leung accept in Boston, MA?
Dr. Leung in Boston, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Blue Cross Blue Shield of Massachusetts
CVS Health (formerly Aetna)
Medicare
Network Health
Point32Health
State of Massachusetts
Tall Tree Administrators
Trustmark Insurance Company
Tufts Health Plan
UnitedHealthcare
View All Insurances
Where is Dr. Leung's office located?
Dr. John Leung's Primary Practice
65 Harrison Ave Ste 201
Boston, MA 02111
(617) 804-6767
What is Dr. Leung's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Leung's National Provider Identifier (NPI) number is 1447328711.
What common questions do patients ask about Dr. Leung?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Leung
What is Dr. John Leung's specialty?
Dr. Leung is a Gastroenterologist near Boston, MA. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Leung to book an appointment today.
Is this Dr. John Leung affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Leung is affiliated with Tufts Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Leung accepting new patients in Boston, MA?
Yes, Dr. John Leung is accepting new patients at this time.
Does Dr. John Leung offer online booking?
Please contact Dr. Leung's office at (617) 804-6767 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Leung?
Please contact Dr. Leung's office at (617) 804-6767 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Leung have?
Dr. John Leung is certified by the American Board of Internal Medicine.
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